Calculate the amount of work done for a wire which area of cross section `10^-6m^2` and length 1.5m to increase the length `4 xx 10^-3` m. Young's modules of elasticity `2 xx 10^(11N//m^2)`.

When a force is applied on a wire of uniform cross-sectional area 3×10 −6 m 2 and length 4m, the increase in length is 1 mm. Energy stored in it will be (Y=2×10 11 N/m 2 )

Find the resistance of a silver wire of length 5m and area of cross-section 4mm^2 . Resistivity of a silver is 1.6xx10_-8 Omega m.

Calculate the resistivity of a wire having resistance .02 ohm, length = 10 m and area = 1mm^2

Calculate the depth of water at which an air bubble of radius 4xx10^-4 m may remain in equilibrium( surface tension = 70xx10^-3 N/m).

A elongation of 0.1% in a wire of cross-sectional area 10"6 m2 causes tension 100 N. The young’s modulus is

Calculate the amount of energy neeeded to break a drop of water of diameter 2xx 10^-3 m into 10^9 droplets of equal size( Surface tension of water = 72xx 10^-31 N/m .

Calculate atomic radiusa of elementary silver which crystallises in facecentered cubic laatice with unit cell edge length 4.086xx10^(-10)m .

A steel wire of length 4.7 m and cross-sectional area 3.0 xx 10^- 5 m^2 stretches by the same amount as a copper wire of length 3.5 m and cross-sectional area of 4.0 xx 10^-5 m^2 under a given load. What is the ratio of the Young’s modulus of steel to that of copper?

Calculate the force required to increase by 1% length of a rod of cross -sectional area 10^(-3) m [Y = 1.2*10^(12) Nm^2]